Update ICU to 58.1

source/data/translit/la_la_FONIPA.txt

Index: source/data/translit/la_la_FONIPA.txt
diff --git a/source/data/translit/la_la_FONIPA.txt b/source/data/translit/la_la_FONIPA.txt
old mode 100755
new mode 100644
index 7a73519cb5515a73408410a45faefe57a7f4e84a..e2d94e0b43373804500821e96b0870080295cdd6
--- a/source/data/translit/la_la_FONIPA.txt
+++ b/source/data/translit/la_la_FONIPA.txt
@@ -1,19 +1,22 @@
-# ***************************************************************************
-# *
-# *  Copyright (C) 2004-2015, International Business Machines
-# *  Corporation; Unicode, Inc.; and others.  All Rights Reserved.
-# *
-# ***************************************************************************
+# © 2016 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html#License
+#
 # File: la_la_FONIPA.txt
-# Generated from CLDR 
+# Generated from CLDR
 #
 
+# Transformation from Latin (la) to its IPA transcription (la_FONIPA).
+# http://en.wikipedia.org/wiki/Latin_spelling_and_pronunciation
+# http://en.wikipedia.org/wiki/Wikipedia:IPA_for_Latin
+#
+# These rules follow the Wikipedia description of the presumed pronunciation
+# of Classical Latin. This is different from Medieval Latin, and it is also
+# different from the ecclesiastical pronunciation used by the Roman Catholic
+# church.
 ::Lower;
 ::NFC;
-
 $vowel = [aáàăāeéèĕēiíìĭīoóòŏōuúùŭūæœ];
 $end_of_word = [$ ];
-
 ae → aj;
 av → aw;
 æ → aj; # 19th century English orthography
@@ -60,10 +63,9 @@ xs → ks; # Old Latin spelling
 x → ks;
 y → y; # Greek loanwords
 z → d\u0361z; # eg. zerum
-
 ::Null;
-
-
+# Gemination of double consonants.
+# http://en.wikipedia.org/wiki/Latin_spelling_and_pronunciation#Double_consonants
 bb → bː;
 dd → dː;
 ɡɡ → ɡː;
@@ -76,7 +78,8 @@ pp → pː;
 rr → rː;
 ss → sː;
 tt → tː;
-
+# Velarization of [l].
+# http://en.wikipedia.org/wiki/Latin_spelling_and_pronunciation#cite_note-20
 {l} [^aeɛiouː] → ɫ;
-
 ::NFC;
+